Home / 268,790.78-370,931.19-155,611.10

Finding the Fourth Proportional to 268,790.78, 370,931.19 and 155,611.10

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Solution

The fourth proportional to 268,790.78, 370,931.19 and 155,611.10 is: 214,743.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,790.78 : 370,931.19 = 155,611.10 : x
  2. Step 2: Convert to fraction form
    268,790.78/370,931.19 = 155,611.10/x
  3. Step 3: Cross multiply
    268,790.78x = 370,931.19 × 155,611.10
  4. Step 4: Simplify right side
    268,790.78x = 57,721,010,500.21
  5. Step 5: Solve for x
    x = 57,721,010,500.21/268,790.78
  6. Step 6: Final answer
    x = 214,743.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.